Reamer-tap.



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Patented sept.v 29, 1908.

3f "I6 2z S. R 9N 5h 9 O3 G 1 K AIPPLIOATION FILED FEB.5,1908.

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GEORGE T. REISS, OF HAMILTON, OHIO, ASSIGNOR TO NILES-BEMENT-PONDCOMPANY, OF JERSEY CITY, NEW JERSEY.

BEAMER-TAP.

TowaZZ whom it may concern:

Be it known that I, GEORGE T. REIss, a citizen of the ,United States,residing at Hamilton, Butler county, Ohio, have invented certain new anduseful Improvements in Beamer-Taps, of which the following is aspecification.

This invention pertains to improvements in taps combined with reamersand has been contrived with special reference to the reaming and tappingof the tapered openings in pipe fittings of large size, and theinvention will be readily understood from the following descriptiontaken in connectionwith the accompanying drawing in which Figure 1 is aside elevation, part vertical section, of a reamer tap exemplifying myinvention: Fig. 2 a bottom view of the reamer: Fig. 3 a horizontalsection of the tap: and Fig. 4 a plan of a portion of the leadernut.

In the drawing :-1, indicates a frame-portion of a reaming and tappingmachine: 2, a bracket supported thereby: 3, ,a sleeve vertically movablein the bracket: 4, a feed pinion j ournaled in the bracket and engaginga rack on the sleeve: 5, a hand-wheel for turning the pinion: 6, a tapand reamer shank j ournaled in the sleeve and having collars engagingthe ends thereof: 7, a gear supported bythe bracket and splined on theshank and typifying means for turning the reamer and tap by power: 8, atapering tap rigidly carried by the lower end of the shank, this tapbeing illustrated as of the inserted blade type and as being a structurerigidly but separably secured to the lower end of the shank: 9, a diskfast on the lower end of the tap 10, dovetailed or undercut radialgrooves in this disk, shown as three in number: 11, reamer jaws mountedto slide in these grooves: 12, a reamer blade rigidly secured theseblades being of a length and exterior taper to produce the proper holefor the tap: 13, downwardly converging dovetailed faces on the innerportions of the reamer jaws: 14, a dovetail block fitting these innerfaces of the reamer jaws and adapted for vertical adjustment within theseries of jaws: 15, a lug projecting upwardly from each jaw within asuitable cavity in the lower face of the tap: 16, radial stop-screwscarried by the tap with their inner ends in position to arrest theoutward movement of' the lugs 15: 17, a stem projecting from adjustinghead 14 up axially Patented Sept. 29, 1908.

1908. Serial No. 414,319.

through the shank: 18, a hand-wheel threaded on the upper end of thisstem: 19, adjustable stop-nuts on the stem above the handwheel: L0, aleader-sleeve secured to the upper end of the shank and having anexterior thread corresponding in pitch with that of the tap: 21, a capscrewed to the upper end of the shank and serving to clamp theleadersleeve in place and serving also to engage over a flange on thehand-wheel 18 and prevent the rising of the hand-Wheel relative to thesleeve: 22, radially movable nut-sections carried by the bracket andadapted to engage the leader-sleeve: 23, a cam-ring supported by thebracket and engaging the nutsections in the ordinary manner ofopen-andshut nuts: and 24, a separable portion of the bracket, thisportion carrying the nut-sections and cam and engaging over the gear 7.

Power applied to gear 7 turns the shank and with it the tap and reamerand, the sectional nut being open, the ta and reamer may be fedvertically by han -wheel 5.

Taps of large size will not start satisfactorily without the aid of aleader, hence the employment of the leader and sectional nut, whichlatter is to be closed when the tap is to be put to work.

In using this contrivance the stem with its head 14 is to be forceddownward by turning the hand-wheel 18. This forces the reamer jawsoutwardly till their lugs 15 are solidly against the stop-screws 16,which stopscrews are to have been so adjusted that the reamer-bladeswill produce the precise di- Y ameter of hole desired for the tap. Itwill be observed that at this time the mechanism for adjusting thereamer blades is under strain, producing solidity of structure, oneabutment being found at the lugs 15 and the other abutment being foundwhere the handwheel engages under cap 21. rlhe same adjustmentof thereamer' could of course be made in the absence of the lugs 15, as bydepending upon stop-nuts 19, but in such case the jaws carrying theblades would not be so solidly held, owing to the fact that theirstability would depend upon the tightness of the fitting of head 14within the jaws, a matter which may be ignored when lugs 15 areemployed.

The reamer having been thus adjusted for its work, the hole to be tappedis to be properly reamed, in an obvious manner. The reamer havingdescended a proper depth into the hole and finished its work it isobvious that the reamcr, if solid, could not pass on through the hole soas to permit the tap to go to work in the hole and, furthermore, theinterior conformation of the walls of pipe fittings, elbows forinstance, is generally such as not to permit the presence of a largeprojection below a tap working full depth in the hole. l`herefore whenthe .roaming is done, the stem is drawn upwardly by means of hand-wheel18, thus moving the reamer jaws and blades inwardly and collapsing thereamcr, after which the sectional nut may be closed and the tapping ofthe hole proceeded with. 'lhe collapsing of the reamcr fits it forpassing through the hole produced by .it and lits it for clearing theinner portions of the walls of pipe fittings.

l. A reamcr tap comprising, a shank, a tap rigidly carried by one endthereof, a col lapsible reamcr carried by the end of the tap, and meansfor expanding and contracting the reamcr, combined substantially as setforth.

2. A reamcr tap comprising, a shank, a tap rigidly carried by one endthereof, a collapsible reamcr carried by the end of the tap, adjustingmechanism at the other end of the shank, and a'stem extending axiallythrough the shank and tap and connecting the adjusting mechanism withthe Vreamcr and serving to expand and contract the reamcr, combinedsubstantially as set forth.

3, A reamcr tap comprising, a shank, a tap rigidly carried by one endthereof, radial guideways carried by the end of the tap, blade-carryingaws sliding in said guideways and having converging inner faces, avertically movable head engaging the inner faces of said jaws, ineansfor vertically adjusting said head, radial stop-screws carried by thetap, and lugs carried by said jaws and adapted to engage the inner endsof the stopscrews, combined substantially as set forth.

4t. A reamcr tap comprising, a shank, a tap rigidly carried by one endthereof, radial guideways carried by the end of the tap, blade-carryingjaws sliding in said guideways and having converging inner faces, avertically movable head engaging the inner faces of said jaws, a stemconnected with said head and passing axially through the tap and shank,a hand-nut screwed on the end of the steml opposite said head, and meansfor preventing movement of said hand-nut axially with reference to theshank, combined substantially as set forth.

5. A reamcr tap comprising, a shank, a tap rigidly carried by one endthereof, adial guideways carried by the end of the tap, bla ile-carryingjaws sliding in said guideways and having converging inner faces, avertically moving head engaging the inner faces of said jaws, a stemconnected with saidl ad and passing axially through the tap and shank, ahandenut screwed on the end ofY the stem opposite said. head, means forpreventing movement of said hand-nut axially with reference to theshank, and an adjustable device to positively limit the movement of saidstem axially with reference to said shank, combined substantially as setforth.

(j. It reamer tap comprising, a shank, a tap rigidly carried by one endthereof, reamer aws carried by the end of the tap and adapted for inwardand outward motion, means for moving said reamer jaws, and adjustablestops for positively limiting the outward movement of the reamer jaws,combined substantially as setforth.

7. ji, reamcr tap comprising, a shank, a tap rigidly carried by one endthereof, a collapsible reamcr carried by the end of the tap, means forexpanding and e mtracting the reamcr, a vertically adjustable sleeveforming the bearing for said shank, means for adjusting said sleeveendwise, mechanism whereby rotary motion may be imparted to said shank,a leader on said shank, a sectional nut for said leader, and means foropening and closing said nut, combined substantially as set forth.

S. reamcr tap comprising, a shank, a sectional disk secured at the endof the shank and forming radial guide rays between its sections, reamcrjaws sliding in said guideways, an adjusting head engaging within theseries of reamcr jaws and adapted to expand and contract the diameter ofthe series of jaws, a stem extending from said adjusting head axiallythrough the shank, and means connected with said stem at the other endof the shank for adjusting the stem endwise, combined substamtially asset forth.

GEORGE T. lllClSS.

Vitncsses:

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